What Is Tonnage (Cooling Capacity)?
Tonnage describes an air conditioner or heat pump's cooling capacity — one ton equals 12,000 BTUs of heat removal per hour. Residential systems commonly range from 1.5 to 5 tons depending on home size, insulation, and layout.
Why It Matters to You
A system sized in the wrong tonnage for your home — too big or too small — causes real comfort and efficiency problems, not just a difference in cost.
Practical Guidance
Bigger isn't automatically better: an oversized unit short-cycles and struggles with humidity control, while an undersized one runs constantly and never quite catches up on hot days.
Related Terms
Let's get your comfort back on track.
Tell us what's going on and our Downers Grove team will reach out — usually within the hour during business hours. For emergencies, call us directly.
Call us(630) 442-9250- Emergency Service Available
- Licensed & Insured
- 5-Star Rated by Our Customers
- Downers Grove, IL & 19 nearby towns
6308 Barrett Street, Downers Grove, IL 60516
Request your service
No obligation. We never sell your info.